Honeywell CT87A installation instructions Installation Instructions

Models: CT87A

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CT87A,B,J Round® Thermostat

LOW VOLTAGE (15 TO 30 VAC),

THERMOSTAT AND MOUNTING HARDWARE

Installation Instructions

1Verify that you have the correct thermostat

Using the compatibility chart below, verify that you purchased the correct CT87Thermostat for your heating/cooling system. If you are unsure which model is right for your system, visit www.honeywell.com/ yourhome or call Honeywell Customer Care at 1-800-468-1502.

 

Compatible with:

Heating/Cooling system

CT87A

CT87B

CT87J

 

 

 

 

Heating only: Gas or oil fueled warm air, steam, or hot

Yes

Yes

No

water heat

 

 

 

Cooling only: Electric air conditioning

Yes*

Yes

Yes

Heating and cooling: Gas or oil fueled warm air,

No

Yes

No

steam, or hot water heat with electric air conditioning

 

 

 

Single stage heat pump: Outdoor heating/cooling unit

No

No

Yes

(compressor) with no auxiliary or backup heat.

 

 

 

Electric heat furnace with or without cooling:

No

No

Yes

Electric baseboard: Electric heating strips located just

No

No

No

above the floor, usually 120-240 volts

 

 

 

 

 

 

 

Multistage: A conventional system with more than one

No

No

No

stage, or an outdoor heating/cooling unit (compressor)

 

 

 

with auxiliary or backup heat.

 

 

 

 

 

 

 

* CT87A is compatible with 2-wire cooling-only systems.

 

 

 

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Honeywell CT87A installation instructions Installation Instructions

CT87A specifications

The Honeywell CT87A is a well-regarded thermostatic control unit designed for residential and light commercial HVAC applications. Specifically known for its reliable performance and user-friendly interface, the CT87A promotes energy efficiency while ensuring a comfortable indoor environment. This model is often referred to as the "Round" thermostat, with its distinctive circular design making it a recognizable fixture in homes.

One of the main features of the CT87A is its straightforward mechanical operation. Utilizing a bimetallic strip, it provides accurate temperature readings and control without the need for complex programming. This simplicity is a significant advantage for users who prefer a manual approach over digital displays and smart technologies. The CT87A comes with an easy-to-read temperature scale, allowing users to adjust the setting effortlessly to their desired comfort level.

In terms of technology, the CT87A functions purely on mechanical principles, making it highly durable over time. The thermostat operates on a 24-volt system, which is standard in many residential heating and cooling units. It is capable of controlling both heating and cooling systems, providing versatility for year-round use. Additionally, it allows for compatibility with a variety of HVAC equipment, making it an ideal choice for homeowners looking to upgrade their system without extensive modifications.

A notable characteristic of the Honeywell CT87A is its ability to deliver consistent performance with minimal power consumption. This contributes to energy savings, making it an environmentally-friendly choice for conscientious consumers. The conventional design does not rely on batteries or complicated electrical systems, reducing maintenance costs and the risk of failure.

Furthermore, the CT87A includes a built-in anticipator that helps to prevent temperature swings, enhancing user comfort. This feature enables the thermostat to adjust its operation slightly ahead of actual heating or cooling demands, ensuring that the desired room temperature is reached more efficiently.

In summary, the Honeywell CT87A thermostat combines reliable mechanical operation, energy efficiency, and ease of use, making it an excellent choice for those who appreciate simplicity and performance in temperature control. Its time-tested design, coupled with essential features, places it among the favorites for homeowners seeking a balance between functionality and comfort. Whether for a heating or cooling system, the CT87A consistently meets the demands of everyday use, ensuring a pleasant living environment.